Bismuth&d platinum electrodes were investigated as pH indicating electrodes in strong KOH solutions (pH 14-16). The E-pH curve of freshly prepared bismuth electrodes is linear, but the E-pH slope altered with time. It is shown that the slope is constant if the bismuth electrode has been aged via immersion in a concentrated KOH solution. The value of the E-pH slope depends on the KOH concentrati...

Bismuth telluride compounds are well-known to be among the most efficient thermoelectric materials at room temperature. Currently, some efforts are made to synthesize nanowires, since theoretical predictions have shown that their transport properties can be favourably modified compared with bulk materials. The feasibility of the electrochemical synthesis of bismuth telluride nanowires in porous...

PURPOSE To compare the dose and image quality of three methods for reducing the radiation dose to the eye at head computed tomography (CT): bismuth shielding, organ-based tube current modulation (TCM), and global reduction of the tube current. MATERIALS AND METHODS An anthropomorphic head phantom was scanned under six conditions: (a) without any dose reduction techniques (reference scanning);...

III-Bismides are a relatively underexplored set of III-V alloys yet offer the possibility to engineer many aspects of the band structure and band alignment which are of significant potential benefit to photonic devices. For example, the incorporation of Bismuth into binary compounds such as GaAs leads to a band anti-crossing effect. However, unlike the dilute nitrides, this occurs in the valenc...

Conductivity and thermopower measurements of artificial three dimensional bismuth crystals are presented. Due to the size dependent band gap of bismuth, electron transport in the bismuth crystals is a combination of both metallic and hopping conduction. The conductivity and thermopower due to the hopping pathways alone can be extracted through a comparison of the properties of the artificial bi...

A bacteriological investigation performed on the biopsies of 1 30 patients with gastrointestinal disorders at the GI section of Imam Khomeini hospital concluded in the isolation of 100 cases of Helicobacler pylori. The antibacterial effects of bismuth salts alone and in synergy with tetracycline and metronidazole were evaluated on the basis of disc diffusion method on 5 randomly selected pu...

In this paper, we report a facile solvothermal method to produce both binary and ternary compounds of bismuth chalcogenides in the form of Bi₂TexSe3 - x. The crystal morphology in terms of geometry and thickness as well as the stoichiometric ratio can be well controlled, which offers the opportunities to systematically investigate the relationship between microstructure and phonon scattering by...